[SPARC64]: Pass regs and entry/exit boolean to syscall_trace()

Also fix a bug in 32-bit syscall tracing.  We forgot to update
this code when we moved over to the convention that all 32-bit
syscall arguments are zero extended by default.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index 5abf596..c57dc9e 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -628,10 +628,10 @@
 	unlock_kernel();
 }
 
-asmlinkage void syscall_trace(void)
+asmlinkage void syscall_trace(struct pt_regs *regs, int syscall_exit_p)
 {
 	/* do the secure computing check first */
-	secure_computing(current_thread_info()->kregs->u_regs[UREG_G1]);
+	secure_computing(regs->u_regs[UREG_G1]);
 
 	if (!test_thread_flag(TIF_SYSCALL_TRACE))
 		return;